Vaporizing type blast whirl oil burner



Nov. 21, 1950 J. o. HORBETZ 2,531,272

VAPORIZING TYPE BLAST WHIRL on. BURNER Filed April 29, 1948 2Sheets-Sheet l Snnentor: JOHN 0 #055572,

Nov. 21, 1950 J. o. HORBETZ 2,531,272

VAPORIZING TYPE BLAST WHIRL OIL BURNER Filed April 29, 1948 2Sheets-Sheet 2 Fig. 4.

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a7 3/ a7 ozmiffiwll I. 34 7 4 34 JOHN O. fioz557z Patented Nov. 21, 1950UNITED STATES earner cosine veronramo TYPE BLes'r warns on. BURNER John0. Hcrbetz, Salt Lake City, Utah Application April 29, 1948, Serial No.23,947

5 Claims.

1 This invention relates to oil burners of the type adapted to maintaina body of oil for sur- -.tace vaporization and blast combustion, eitherwith natural or forced draft.

A variety of burners of this type have heretofore been developed, but'sofar as I am aware, none embody the structural features which I havefound to. produce superior results in practice.

Among the objects: of my invention are:

To provide, at least in certain embodiments,

for the shifting of the cover relative; to. the oilcontaining vessel.for changing the. width: of the burner gap and varying the volume ofthe: flame at difierent locations along said burner gap;

To provide an improved oil: burner or the type concerned.

Further objects and; features of the invention will: become apparentfrom the following detailed description of the specific constructionsillu trated in the accompanying. drawings- I In the; drawings, whichexemplify rather than limit the inventive concepts:

Fig- 1 represents a: top plan view of one form of 1113 improved oilburner adapted especially for furnaces: and. heaters, flames beingindicated schematically;

Fig. 2, a side elevation;

Fig; 3, a vertical section taken on the line i -3,, Fig, 1,v an: airconduitha-ving been add 4, a View similar to; that of Fig. l, butillustrating a. somewhatdifiere-nt construction adapted, especially forcook stoves;

Fig. a side elevation 6, a longitudinal vertical section taken on theline? fi-B, Fig. 4; and

Fig. 7, atransverse vertical section taken on the line l Fig.

. trough t6 adapted to contain a body of oil ii,

tank (not shown).

supplied in regulated quantity through the pipe is by any suitablemeans, such as a gravity flow The body of oil it presents a broadvaporizing surface lid.

The trough Ed has an outer wall is and an iiiher well it of lesserheight, the latter defining a central opening 55- which serves as apassage for the inflow of air to the burner. If desired, an air conduitit, Fig. 3, may be fitted to the J opening it to supplyair from anysuitable source by either natural or forced draft in well; known manner.

It is preferred that the trough {it be provided with three short legs Hto furnish proper support within the fire pot of a furnace or otherheater. Advantageously, the entire trough; is, a

casting of Suitable metal, such as. iron, and it is desirable that ofthe legs be provided with a passage l3, Fig. 3, into the outer end ofwhich the cit-supply pipe 5 2; is threaded, the inner end opening intothe bottom of the trough.

Superimposed upon the annular trough it is a circular plate cover It,which has a central conical deflector 2H depending into the; air-supplyopening F5 for directingair outwardl toward the oil-containing trough.The cover [9 is supported on the inner and lower rim of the trough, thatis to say, on the top of the inner wall i5- 01 the trough, by means of amultitude of curved heat-radiating fins 25 which depend from theunderside of the cover and extend substantially radially intermediatethe deflector 23 and the covers circumferential periphery. These fins2!, seating as they do on the inner wall M of the trough, determine acircular burner gap 22 between the cover and the: outer wall l? of thetrough. It should be noted that this burner gap 22 completelyunobstructed, thereby affording free sweep for flames emerging from theburner. It should be noted, further, that, the fins 2t extend well belowthe outer rim of the trough: to, and are in fact disposed for themostpart with-in the trough, thereby causing air from the air supplyopening E5 to swirl; within the trough above the bodyof oil H prior todischarge through the burner gap. This, coupled with. the heatconcentrating and radiating character. oi the fins, enhances thevaporizing action or the device: as welt as imparting a desirablewhirling: motion to: flames emerging from the burner.

As illustrated, shorter fins 2'3 of less vertical depth advantageously"alternate with the fins. 21', andhang' freely within the trough. Hiimmediately above the surface Ha of the bodyof oil. These 3 furtherenhance the vaporizing action of the device.

Advantageously, neither the long nor the short fins merge with thedeflector 20, thereby leaving open entrances to the fiow channelsbetween fins, such flow channels themselves being substantiallyunobstructed lengthwise to provide for unimpeded fiow therethrough.

Whil the circular form of burner above described is especially suitablefor certain instances of use, the novel features of the invention may beincorporated in other forms. For example, the elongate form illustratedin Figs. 4, 5, 6 and 7 is especially suited for use in cook stoves.There, both the trough 30 and gap-defining cover 31 are of essentiallyrectangular configuration.

The trough 30 extends peripherally about an air-supply opening 32, whichmay or may not have connected therewith a supply conduit such as thatillustrated at [6 in the prior figures.

As in the prior embodiment, the inner wall 33 of the trough 30 is ofless height than the outer wall 34, and serves to seat heat-radiatingfins depending from the underside of the cover 3|. this instance, onlyfins 35 at opposite ends of the cover are curved. They radiate from thesemi-circular ends of an elongate deflector 36, and serve to effect awhirling action of air and flame at opposite ends of the burner in amanner similar to the embodiment previously described. As illustrated,all the fins 35 seat upon inner wall 33 of the trough and are disposedin major extent below the level of the outer peripheral wall of thetrough.

Intermediate the length of the cover 3! are straight fins 31, which, asillustrated, merge into the body of the deflector 36, see Fig. 7. Whilethese fins do not produce as effective a swirling action of the airabove the body of oil within the trough as do the fins 35, they dodirect the flow in definite paths within the confines of the trough asdefined by the wall 34, and render effective aid to surface vaporizationof the body of oil. Both the fins 35 and the fins 31 by their seating oninner wall 33 of the trough determine the extent of the burner gap 38.

In this embodiment, because of the equal depths of the fins, the cover3! may be shifted forwardly or backwardly or from side to side to varythe character of the burner gap and thereby control the volume of flameat any given location along the length of such gap, this beingparticularly advantageous for cock stoves.

The oil-containing portion of the trough 30 is preferably divided intothree zones by the low partitions 39 and 40, Fig. 6, and 4|, Fig. 7, thezones being indiivdually supplied with oil through respective supplylines 52, see Fig. 5. This tends to stabilize burner action.

Whereas this invention is here illustrated and described with respect topreferred specific embodiments thereof, it should be understood thatvarious changes may bemade within the scope of the following claims.

What is claimed is:

1. An oil burner, comprising a trough surroundmg and defining anair-supply opening, said trough having its outer wall of greater heightthan its inner wall and being adapted to contain: a body of oil with abroad vaporizing surface; acover for said trough and air-supply opening,said cover having a deflector depending substantially centrally from itsunderside into said opening for directing air outwardly toward said!trough; a multitude of heat-radiating fins depending from the undersideof said cover in substantially radial arrangement between said defiectorand the rim of said cover and defining a plurality of laterally-directedand substantially unobstructed fiow channels, at least part of saidmultitude of fins seating upon the inner wall of the trough to supportsaid cover and to determine a laterally-directed, peripheral burner gapbetween the peripheral margin of said cover and. the outer wall of thetrough, said fins having the major portion of their vertical depthsdepending into said trough below the rim of the outer wall thereof, sothat said flow-channels are disposed to a major extent within the troughand below the said rim of the outer wall thereof, terminating within thetrough and having their discharge openings directed laterally towardsaid burner gap below the overhanging peripheral margin of said cover.

2. An oil burner, comprising an annular trough for containing a body ofoil with a broad vaporizing surface, the outer wall of said trough beingof greater height than the inner wall which defines an air-supplyopening; a circular cover for said trough and air-supply opening, saidcover having a deflector'depending centrally from its underside into thesaid opening for directing air outwardly toward the trough; a multitudeof curved, heat-radiating fins depending from the underside of saidcover and arranged radially between the said deflector and the rim ofthe cover, and defining a plurality of laterally-directed andsubstantially unobstructed flow channels, said fins being alternatelylong and short, the long fins having greater depth than the short finsand being arranged to seat upon the said inner wall of the trough tosupport the cover and to determine a laterally-directed peripheralburner gap between the peripheral margin of said cover and the outerwall of the trough and the short fins hanging freely within the trough,said fins having the major portion of their vertical depths dependinginto said trough below the rim of the outer wall thereof, so that saidflowchannels are disposed to a major extent within the trough and belowthe said rim of the outer wall thereof, terminating within the troughand having their discharge openings directed laterally toward saidburner gap below the overhanging peripheral margin of said cover.

3. An oil burner, comprising a trough rectangularly surrounding anddefining an air-supply opening, said trough having its outer wall ofgreater height than its inner wall and being adapted to contain a bodyof oil with a broad vaporizing surface; a substantially rectangularcover for said trough and air-supply opening, said cover having anelongate deflector depending substantially centrally from itsundersideinto said opening for directing air outwardly toward saidtrough; a multitude of heat-radiating fins depending from the undersideof said cover in substantially radial arrangement between said deflectorand the rim of said cover and defining a plurality of laterally-directedand substantially unobstructed flow channels, said fins seating upon theinner wall of the trough to support said cover and to determine alaterally-directed. peripheral burner gap between the peripheral marginof said cover and the outer wall of the trough, said fins having themajor portion of their vertical depths depending into said trough belowthe rim of, the

outer wall thereof, so that said flow-channels are disposed t9 a majorextent within the trough and 5 below the said rim of the outer wallthereof, terminating within the trough and having their dischargeopenings directed laterally toward said burner gap below the overhangingperipheral margin of said cover.

4. An oil burner as defined in claim 3, wherein the fins of equal depthso the cover may be shifted to vary the character of the peripheralburner gap.

5. An oil burner as defined in claim 3, wherein the fins at oppositeends of the cover are curved, while the fins intermediate the said endsare straight.

JOHN O. HORBETZ.

REFERENCES CITED The following references are of record in the file ofthis patent:

Number Number 6 UNITED STATES PATENTS Name Date Tucker Apr. 12, 1904Turner Dec. 19, 1922 Staples June 23, 1925 Hackforcl Mar. 25, 1930Roberts Feb. 3, 1931 Hill Nov. 27, 1934 FOREIGN PATENTS Country DateGreat Britain Nov. 21, 1929

